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一种新型Inside-Out核磁共振传感器——三圆柱磁体阵列

电工技术学报(2016)

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Abstract
介绍了一种新型的inside-out核磁共振传感器。该传感器磁体结构由三个沿轴向磁化的圆柱形永磁体同轴排列而成,结构紧凑。通过调节三个磁体之间的距离,可以在磁体结构外侧建立起径向对称的均匀静态磁场或有恒定梯度的静态磁场B0,其方向平行于传感器轴向。为了满足射频磁场B1垂直于静态磁场B0的要求,射频线圈采用马鞍形结构。传感器直径为2.8cm,长度为6cm,重为200g。该传感器磁体结构简单,且灵敏区域相对其本身尺寸较大。
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Key words
Inside-out nuclear magnetic resonance sensor,three-cylinder array,homogeneous magnetic field,constant gradient magnetic field,saddle coil
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